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Double-Row Tapered Roller Bearing (Inward Type, for Axial Load Support) TDIS Series

TDIS形 / JTEKT Corporation (Official website) / Listed on page 131 of the document

Double-row tapered roller bearings for axial load support, with bore diameters of 100 to 900 mm. Keyway types are available, and dimensions and load ratings are listed for each model number.

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Double-Row Tapered Roller Bearing (Inward Type, for Axial Load Support) TDIS Series on page 131 of JTEKT Corporation "JTEKT 大形転がり軸受カタログ（技術解説・軸受寸法表）"
Source: JTEKT Corporation「JTEKT 大形転がり軸受カタログ（技術解説・軸受寸法表）」page 131
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Specifications

Inner diameter d 100 to 900 mm
Outer diameter D 215 to 1220 mm
Width T 84 to 400 mm

How to choose Tapered Roller Bearings

Points to check when selecting, with the values for this product (Double-Row Tapered Roller Bearing (Inward Type, for Axial Load Support) TDIS Series).

  1. 1. Dimension series matching shaft and housing

    This product: Inner diameter d 100 to 900 mm

    Bore d matches the shaft diameter and outside diameter D matches the housing bore. Tapered roller bearings come in metric and inch series, and bearings of similar size are not interchangeable. When replacing bearings in existing machinery, confirm the series of the boundary dimension designation, and check inner ring width B and outer ring width C against the step dimensions of the mounting section.

  2. 2. Managing preload with assembled width T and tolerance

    This product: Width T 84 to 400 mm

    Width T is the overall width of the inner and outer rings when assembled, and it affects axial mounting dimensions and the adjustment amount for preload or clearance. The assembled width tolerance class changes the effort required for adjustment, so when used in pairs, confirm T and its tolerance class.

  3. 3. Estimating life with basic dynamic load rating

    Basic dynamic load rating Cr is the basis for life calculation. From radial and axial loads, the dynamic equivalent load is obtained using factor e and load factor Y1, and rated life is calculated from the ratio to Cr. The listed Cr values range from 9.5 kN to several tens of thousands of kN and vary greatly with the number of rows.

  4. 4. Checking shock and low-speed use with static load rating

    For applications with stationary operation, very low speed, or shock loads, check the margin against permanent deformation using the ratio of basic static load rating C0r to the static equivalent load (calculated with Y0). For heavy-duty rolling mills and similar uses, secure capacity with double-row or four-row types.

  5. 5. Determining shaft support by load action point position

    Tapered roller bearings have load action points located away from the end face, and the span between supports changes depending on back-to-back or face-to-face arrangement. Use the load action point position a for calculating shaft deflection and reaction forces, and determine the mounting direction accordingly.

  6. 6. Matching rotational speed and lubrication method

    The permissible rotational speed is set higher for oil lubrication than for grease lubrication. Confirm that the operating speed is within the value for each lubrication method. For differentials and other applications where energy saving is required, low-torque types showing the friction torque reduction rate are also candidates.

This guide was written by AI based on the listed products' documents and specification items.

About Tapered Roller Bearings and all products

Description

Includes types with square keyways and round keyways, as well as types for oil mist lubrication. Basic load ratings, fatigue limit loads, keyway dimensions, and other specifications are listed for each model number.

Features

  • For axial load support
  • Keyway types available
  • Oil mist lubrication compatible types available

Applications

  • Industrial machinery
  • Mining machinery
  • Iron and steel machinery

FAQ

Q. What loads are TDIS series double-row tapered roller bearings suited for?
A. The TDIS series is a double-row tapered roller bearing for axial load support. It is used in industrial machinery, mining machinery, iron and steel machinery, and similar applications.
Q. What are the bore, outside diameter, and width ranges of the TDIS series?
A. Bore diameter d is 100 to 900 mm, outside diameter D is 215 to 1220 mm, and width T is 84 to 400 mm.
Q. Are keyway types available in the TDIS series, and what shapes are offered?
A. Yes, keyway types are available. They include types with square keyways and round keyways, and keyway dimensions are listed for each model number.
Q. Is the TDIS series compatible with oil mist lubrication?
A. Yes, there are types for oil mist lubrication. Please check each model number for compatibility.
Q. Where can I find the basic load rating and fatigue limit load for each TDIS model number?
A. Basic load ratings, fatigue limit loads, keyway dimensions, and other data are listed for each model number.

Written by AI based on the content of the source documents.

Source documents

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